Encapsulate custom slave properties in an object

slave variables documentation - Pregmod.txt

src/art/artJS.js

src/art/vector/VectorArtJS.js

src/cheats/PCCheatMenu.tw

src/cheats/mod_EditChildCheatNew.tw

src/cheats/mod_EditSlaveCheat.tw

src/cheats/mod_editSlaveCheatNew.tw

src/events/intro/introSummary.tw

src/facilities/nursery/longChildDescription.tw

src/init/dummy.tw

src/js/DefaultRules.js

src/js/SlaveState.js

src/js/assayJS.js

src/js/datatypeCleanupJS.js

src/js/economyJS.js

src/js/slaveSummaryWidgets.js

src/npc/databases/cheatmodeDatabase.tw

src/npc/databases/dSlavesDatabase.tw

src/npc/databases/ddSlavesDatabase.tw

src/npc/databases/dfSlavesDatabase.tw